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Import FBX chunks material instances

Hi, When I use fracture mesh in the destruction editor, and add 2elements/materials under the skeletal mesh component all works as expected. Depth 1 shows outer material and inner material with two elements/materials. When importing FBX chunks however with outer and Inner ID's proper assigned in 3dmax. It generates different materials for each chunk? Which is renders it hard to use (if not unusable) as you need to assign materials for each chunk. Seems a bit messy. Maybe I'm missing something or doing something wrong at export?

I've tried searching for it but documentation about the Import FBX chunks is limited.

This also goes for setting the chunk params: Support chunk, Do Not Fracture, Do not damage,... how can we batch/mass select our chunks to assign these properties?

Thanks in advance, and Kind Regards,

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asked Oct 01 '14 at 08:33 PM in Using UE4

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avatar image Pierdek Jan 08 '15 at 08:35 PM

I'm also interested how to optimize number of materials after importing chunks from fbx.

avatar image Tim Hobson ♦♦ STAFF Jan 10 '15 at 05:10 AM

Hey Pierdek,

Thanks for reviving this one.

I'll look into this next week and see if I can get any better results or clarification if this can be improved in anyway. I setup a DM this past week with about 60 FBX chunks and just as many materials.

I'll get back to you soon on this one. :)


avatar image Pierdek Jan 10 '15 at 09:27 AM

Basically I have a FBX with 19 chunks and they can share one material, We need something to supress creating additional materials per chunk and render them in one batch.

avatar image garcellano May 25 '17 at 12:33 AM

Going through the same issue, too. Imported an FBX custom mesh, for a Destructible Mesh, and all of the chunks have its own Material ID. Altogether, it's over 100 chunks, so I'm wondering if there's a good solution for this.

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Hi MFatal and Pierdek,

I've submitted the request to have this considered by the engineers for a future release. The reference for this ticket is UE-8566.

Thank you!


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answered Jan 28 '15 at 09:56 PM

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Tim Hobson ♦♦ STAFF
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avatar image tharmine Feb 26 '15 at 08:36 PM

Hi there, any news about that? Thank you in advance,

avatar image Tim Hobson ♦♦ STAFF Feb 26 '15 at 08:42 PM

No update to report about at this time. The earliest this would be looked at would be after GDC but there is no definitive ETA for when this will be addressed.

avatar image CelestialPanda Sep 08 '15 at 02:21 PM

Any news? Still an issue with 4.8.3.

avatar image Tim Hobson ♦♦ STAFF Sep 08 '15 at 02:24 PM

No news to report at this time. Currently it's backlogged due to other priorities.

avatar image Kajisan Feb 14 '16 at 05:22 AM

Hello, oh god..you guys are probably going to hate me sooner than later.

Anyways, i try my best to keep it like that. ;)

Any update on FBX chunks material import or anything destructible mesh related? Come on, it's Valentines Day. <3

avatar image Tim Hobson ♦♦ STAFF Feb 15 '16 at 04:23 PM

I hate to break your heart on Valentine's Day, but this one is still backlogged. :(

There are plans to overhaul the destruction system in the future, unfortunately, it's just not a priority right now due to other tasks. One day though!

avatar image SDVenom Dec 27 '16 at 10:45 PM

Any updates? ;)

avatar image Tim Hobson ♦♦ STAFF Dec 28 '16 at 12:01 PM

Any updates can be followed up on our Issues.UnrealEngine.com site now to reference any specific tickets that have been entered.


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